Industrial membranes

Kynar® PVDF, when highperformance matters

®

HIGHLIGHTS & APPLICATIONS

Kynar® PVDF is well established in the chemical processing industry for its excellent chemical resistance, mechanical strength, and long-term durability. These same qualities make this resin a great option for use in microfiltration and ultrafiltration membranes. Kynar® PVDF polymers are soluble in a variety of solvents, allowing them to be solvent-cast by the phase inversion process. Membranes made with Kynar®

PVDF may be prepared as flat sheets, hollow fibers, and tubular configurations via the TIPS and NIPS processes.

Select Kynar® PVDF grades are USP Class VI compliant and listed in the federal register, NSF-51 and NSF-61, which allows the resins to be used in food contact and potable water applications. The outstanding chemical resistance of Kynar® resins allows a broad range of applications, including: potable water, high purity, and wastewater treatment. Medical applications include blood and protein filtration. Chemical filtration applications include food and beverage, biopharmaceutical, dairy, and paint.

KYNAR® PVDF HIGHLIGHTS KYNAR® PVDF MEMBRANE APPLICATIONS

50+ year track record in PVDF production Food & Beverage filtration

Outstanding Chemical Resistance i.e. ozone, chlorine, bromine, hydrogen peroxide, chlorine dioxide, acids

Homopolymer pH=1–12 Copolymers pH=1–13

Water filtration (MF and UF pore size)i.e. wastewater, viral rejection, ultrapure, deionized,

potable water, membrane bio-reactors

Grades available in a wide viscosity range for both flat sheet and hollow fiber membranes including both

TIPS and NIPS processes Chemical process filtration (i.e. paint)

Grades that produce highly durableanti-fouling membranes

Biomedical blood and protein filtration

Select Kynar® PVDF grades used in membrane production are USP Class VI, NSF-51, and NSF-61 compliant

Biopharmaceutical filtration

Grades available for nanofiber production and nanofiber membranes

Membrane distillation

Technical support teams have the ability to prototypehollow fiber, reinforced hollow fiber, and

flat sheet membranesSeparations i.e. liquid/liquid, liquid/gas, gas/gas

Radiation resistant and can be sterilized via conventional methods including gamma, steam, and EtOH

Porous support for coating of specific separative layer(s) for gas/gas or liquid/gas separation2

A GRADE FOR EVERY APPLICATION

A range of Kynar® PVDF grades are available to help customers tailor their membranes for specific applications and processing. The Kynar® 700 series is produced in a range of viscosities, permitting customers to select the optimum product for their membrane process. Kynar® MG 15 is a new grade designed specifically for hollow fiber spinning.

Kynar® HSV 900 is a very high viscosity grade especially suitable for hollow fiber casting and other applications requiring high gel strength. Kynar Flex® copolymer grades offer even higher pH chemical resistance and greater flexibility.

Kynar® resins are supplied in several forms: fine powder, granular, and pellets. Powders are often preferred for ease of dissolution, while our new granular, high bulk density, free flowing G150 allows for easier handling and solubility.See table below.

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SOLUTION VISCOSITY (25°C @ 10S–1)TABLE 1

UNITSKynar® 700 SeriesKynar® MG SeriesKynar® HSV 900

Kynar® 301FKynar Flex® 2801

Physical Properties+

Specific Gravity D792/73°F (23°C)

g/cm3 1.77-1.79 1.75-1.77 1.76-1.79

Water Absorption %D570/68°F (20°C)Immersion/ 24 Hours

% 0.01-0.03 0.02-0.04 0.03-0.05

Mechanical Properties+

Flexural Strength@ 5% StrainD790/73°F (23°C)

psi(MPa)

8,500-11,000(58-76)

7,000-9,000 (48-62)

3,000-5,000 (20-34)

Flexural ModulusD790/73°F (23°C)

psi(MPa)

240,000-335,000(1,655-2,310)

200,000- 260,000 (1,379-1,792)

70,000-120,000 (620-827)

Tensile Yield ElongationD638/73°F (23°C)

% 5-10 10-15 10-20

Tensile Yield StrengthD638/73°F (23°C)

psi(MPa)

6,500-8,000 (45-55)

5,000-7,500 (34-52)

2,900-5,000 (20-34)

Tensile Break Elon-gationD638/73°F (23°C)

% 50-200 50-250 200-400

Tensile Break StrengthD638/73°F (23°C)

psi(MPa)

5,000-8,000(34-55)

4,500-7,000 (31-48)

2,500-5,000 (17-34)

Tensile ModulusD638/73°F (23°C)

psi(MPa)

200,000-335,000 (1,379-2,310)

150,000- 200,000 (1,034-1,379)

80,000-130,000 (551-896)

Thermal Properties+

Melt TemperatureD3418

°F(°C)

323-342(162-172)

311-320(155-160)

284-293 (140-145)

Tg (DMA) @ 1HzD7028

°F(°C)

-41– -37(-40 – -38)

-41 – -37(-40 – -38)

-42 – -39(-41 – -39)

Kynar® Grade for Every Application

GRADEMelt Visc (kp)

Solution Visc. 10% in DMAC (cps)

Solution Visc. 10% in NMP (cps)

Notes:

741 16 -19 100 - 200 200 - 350Good for

TIPS hollowfiber (HF)

761 26 - 29 225 - 350 500 - 800Good for TIPS

hollow fiber (HF)

761A 32 - 35 ~ 450 - 650 1000 -1500Sheet

membranesand NIPS HF

MG 15/G150

36 - 39 700 - 900 1500 - 2000High strength

NIPS HF*

HSV900/G800

49 - 52 5000 -7000 10000 -15000Low solids NIPS

HF**

301F 27 - 30 450 - 550 800 - 1000 MF Membranes, supported fibers

2801 25 - 29 ~ 300 - 400 500 -800

HFP Copolymer Improved Caustic

Resitance & Flexibility

* Specifically designed for robust hollow fiber spinning and producing high strength membranes.** High viscosity grade that can be spun at low solids levels making it potentially attractive for membrane distillation.

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PHYSICAL, MECHANICAL, & THERMAL PROPERTIESTABLE 2

+ Typical property values. Should not be construed as sales specifications

TECHNICAL SERVICE

ARKEMA, A GLOBAL LEADER IN INNOVATIONLET US SAVE YOU YEARS ON R&D

Modelformulations

Hollowfiber

KYNAR® PVDFFOR MEMBRANES

Applicationsengineering

Customadditives

ReinforcedNon-reinforced

Flat sheet

Superhydrophobic& hydrophilic

Anti-fouling

TIP & NIPSmembraneprocessing

Characterization

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R&D

Arkema, a leader in PVDF, is a global company with the resources to better serve our customers. Our experienced R&D staff and full analytical services provide us with the tools to prototype and test hollow fiber, reinforced fiber, and flat sheet membranes. Our team can provide initial formulations and process parameters for various grades of Kynar® PVDF to enable our customer’s development and speed to market.

Model formulation Membrane spinning conditions On-site lab trials and training Field technical support Characterization Global support

CONTINUOUS INNOVATION

NIPS HOLLOW FIBER PILOT LINE

CHLORINE AGING STUDY

NIPS CONCENTRIC HOLLOW FIBER

Higher strength membranes

Durable anti-fouling Flex grades

KYNAR® PVDF

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CHEMICAL RESISTANCE

Acids (1-6)

PVDFCHEMICALRESISTANCE

Base (8-13)

Oxidizers

ChloridehypochloriteOzone

Alcohols

LONGER LIFETIME & MORE FORGIVING

1,000,000Cl- ppm hours >10 year lifetime

KYNAR® PVDF

KYNAR® PVDF MEMBRANES - LOWER FOULING- HIGHER DURABILITY - LONGER LIFE

Less maintenance Safer and more reliable

NEW KYNAR® PVDF – DURABLE/ANTIFOULING GRADES

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Water**

KYNAR®

P V D FLi Salts*

Alcohols**

PVP*Polyethyleneglycols

Organicacids**

ADDITIVES

SOLUBILITY & ADDITIVES

SOLUBILITYKynar® resins have solubility properties suitable for easy processing by a variety of typical membrane forming processes. Table 3 lists active and latent solvents. Generally, Kynar® PVDF is not soluble in aliphatic hydrocarbons, aromatic hydrocarbons, chlorinated solvents, alcohols, acids, halogens, and basic solutions.

ACTIVE SOLVENTS

Solvent BoilingPoint °C

FlashPoint °C

Dimethyl Acetamide a 166 70

N-Methyl-2-Pyrrolidone a 202 95

Dimethyl Formamide 153 67

Dimethyl Sulfoxidec (DMSO) b 189 88

Triethyl Phosphate 215 116

Tetramethyl Urea 177 1165

a Most commonly used solvents.b DMSO is a product offered by Arkema

*Pore forming** Non-solvent

type additives

Excellent clarity of

completely dissolved

Kynar® PVDF in DMAC

TABLE 3

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The statements, technical information and recommendations contained herein are believed to be accurate as of the date hereof. Since the conditions and methods of use of the product and of the information referred to herein are beyond our control, ARKEMA expressly disclaims any and all liability as to any results obtained or arising from any use of the product or reliance on such information; NO WARRANTY OF FITNESS FOR ANY PARTICULAR PURPOSE, WARRANTY OF MERCHANTABILITY OR ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, IS MADE CONCERNING THE GOODS DESCRIBED OR THE INFORMATION PROVIDED HEREIN. The information provided herein relates only to the speci c product designated and may not be applicable when such product is used in combination with other materials or in any process. The user should thoroughly test any application before commercialization. Nothing contained herein constitutes a license to practice under any patent and it should not be construed as an inducement to infringe any patent and the user is ad- vised to take appropriate steps to be sure that any proposed use of the product will not result in patent infringement. See SDS for Health & Safety Considerations. Arkema has implemented a Medical Policy regard- ing the use of Arkema products in Medical Devices applications that are in contact with the body or circulating bodily fluids: (http://www.arkema.com/en/social-responsibility/responsible-product-management/ medical-device-policy/index.html). Arkema has designated Medical grades to be used for such Medical Device applications. Products that have not been designated as Medical grades are not authorized by Arkema for use in Medical Device applications that are in contact with the body or circulating bodily uids. In addition, Arkema strictly prohibits the use of any Arkema products in Medical Device applications that are implanted in the body or in contact with bodily fuids or tissues for greater than 30 days. The Arkema trademarks and the Arkema name shall not be used in conjunction with customers’ medical devices, including without limitation, permanent or temporary implantable devices, and customers shall not represent to anyone else, that Arkema allows, endorses or permits the use of Arkema products in such medical devices. It is the sole responsibility of the manufacturer of the medical device to determine the suitability (including biocompatibility) of all raw materials, products and components, including any medical grade Arkema products, in order to ensure that the nal end-use product is safe for its end use; performs or functions as intended; and complies with all applicable legal and regulatory requirements (FDA or other national drug agencies) It is the sole responsibility of the manufacturer of the medical device to conduct all necessary tests and inspections and to evaluate the medical device under actual end-use requirements and to adequately advise and warn purchasers, users, and/or learned intermediaries (such as physicians) of pertinent risks and ful ll any postmarket surveillance obligations. Any decision regarding the appropriateness of a particular Arkema material in a particular medical device should be based on the judgment of the manufacturer, seller, the competent authority, and the treating physician.

Kynar® and Kynar Flex® are registered trademarks of Arkema.

© 2020 Arkema Inc. All rights reserved.

Headquarters: Arkema France420, rue d’Estienne d’Orves

92705 Colombes Cedex – FranceTel.: +33 (0)1 49 00 80 80Fax: +33 (0)1 49 00 83 96

arkema.com

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King of Prussia, PA 19406Tel.: (+1) 800-596-2750

Fax: +1 610 205 7497arkema-americas.com

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